Addition of EFFECT_CMD_OFFLOAD for effects offload

Added EFFECT_CMD_OFFLOAD command to audio effect control
interface. It is used by the framework to indicate if
the playback thread the effect is attached to is offloaded
of not.

Added effect flag EFFECT_FLAG_OFFLOAD_SUPPORTED indicating if
the effect implementation supports offloading to a DSP.

Change-Id: I26553576657d3aa9cd0cdcd5785c813b02f48136
Signed-off-by: jpadmana <jayashree.r.padmanaban@intel.com>
Signed-off-by: Eric Laurent <elaurent@google.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/include/hardware/audio_effect.h b/include/hardware/audio_effect.h
index 2940b1a..b49d02d 100644
--- a/include/hardware/audio_effect.h
+++ b/include/hardware/audio_effect.h
@@ -147,6 +147,9 @@ typedef struct effect_descriptor_s {
 //  |                           |           | 1 requires audio source updates
 //  |                           |           | 2..3 reserved
 //  +---------------------------+-----------+-----------------------------------
+//  | Effect offload supported  | 22        | 0 The effect cannot be offloaded to an audio DSP
+//  |                           |           | 1 The effect can be offloaded to an audio DSP
+//  +---------------------------+-----------+-----------------------------------
 
 // Insert mode
 #define EFFECT_FLAG_TYPE_SHIFT          0
@@ -229,6 +232,14 @@ typedef struct effect_descriptor_s {
 #define EFFECT_FLAG_AUDIO_SOURCE_IND    (1 << EFFECT_FLAG_AUDIO_SOURCE_SHIFT)
 #define EFFECT_FLAG_AUDIO_SOURCE_NONE   (0 << EFFECT_FLAG_AUDIO_SOURCE_SHIFT)
 
+// Effect offload indication
+#define EFFECT_FLAG_OFFLOAD_SHIFT       (EFFECT_FLAG_AUDIO_SOURCE_SHIFT + \
+                                                    EFFECT_FLAG_AUDIO_SOURCE_SIZE)
+#define EFFECT_FLAG_OFFLOAD_SIZE        1
+#define EFFECT_FLAG_OFFLOAD_MASK        (((1 << EFFECT_FLAG_OFFLOAD_SIZE) -1) \
+                                          << EFFECT_FLAG_OFFLOAD_SHIFT)
+#define EFFECT_FLAG_OFFLOAD_SUPPORTED   (1 << EFFECT_FLAG_OFFLOAD_SHIFT)
+
 #define EFFECT_MAKE_API_VERSION(M, m)  (((M)<<16) | ((m) & 0xFFFF))
 #define EFFECT_API_VERSION_MAJOR(v)    ((v)>>16)
 #define EFFECT_API_VERSION_MINOR(v)    ((m) & 0xFFFF)
@@ -426,6 +437,8 @@ enum effect_command_e {
    EFFECT_CMD_GET_FEATURE_CONFIG,   // get current feature configuration
    EFFECT_CMD_SET_FEATURE_CONFIG,   // set current feature configuration
    EFFECT_CMD_SET_AUDIO_SOURCE,     // set the audio source (see audio.h, audio_source_t)
+   EFFECT_CMD_OFFLOAD,              // set if effect thread is an offload one,
+                                    // send the ioHandle of the effect thread
    EFFECT_CMD_FIRST_PROPRIETARY = 0x10000 // first proprietary command code
 };
 
@@ -732,6 +745,20 @@ enum effect_command_e {
 //  size: 0
 //  data: N/A
 //==================================================================================================
+// command: EFFECT_CMD_OFFLOAD
+//--------------------------------------------------------------------------------------------------
+// description:
+//  1.indicate if the playback thread the effect is attached to is offloaded or not
+//  2.update the io handle of the playback thread the effect is attached to
+//--------------------------------------------------------------------------------------------------
+// command format:
+//  size: sizeof(effect_offload_param_t)
+//  data: effect_offload_param_t
+//--------------------------------------------------------------------------------------------------
+// reply format:
+//  size: sizeof(uint32_t)
+//  data: uint32_t
+//--------------------------------------------------------------------------------------------------
 // command: EFFECT_CMD_FIRST_PROPRIETARY
 //--------------------------------------------------------------------------------------------------
 // description:
@@ -868,6 +895,11 @@ typedef struct effect_param_s {
     char        data[];     // Start of Parameter + Value data
 } effect_param_t;
 
+// structure used by EFFECT_CMD_OFFLOAD command
+typedef struct effect_offload_param_s {
+    bool isOffload;         // true if the playback thread the effect is attached to is offloaded
+    int ioHandle;           // io handle of the playback thread the effect is attached to
+} effect_offload_param_t;
 
 
 /////////////////////////////////////////////////